Patent US2892997A successfully refreshed from Google Patents.
US2892997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital computing machines
Assignee: Powers Samas Accounting Machines Ltd
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Filing: 1956-09-24
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Granted: 1959-06-30
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Expires: 1976-09-24
Abstract
No abstract record available.
Inventors
- 👤 Yandell Ronald Percy Bawden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:09
CPC Classifications
G; G06; G06F; G06F9/00; G06F9/06; G06F9/30; G06F9/34; G06F9/342; G06F9/355
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2680241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-29 | 1962-12-29 | 1963-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-29 | 1966-12-29 | 1967-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-29 | 1970-12-29 | 1971-06-30 | $7700.00 | Window Closed / Lapsed |